HomeUM Research Journalvol. 8 no. 1 (2011)

Cloning of Pink Tecoma (Tabebuia rosea Berthol) Using Various Concentrations of a Napthalene Acetic Acid and Nodal Sections

Nympha E. Espanto

Discipline: Natural Sciences



In this experiment, a pink Tecoma (Tabebuia Rosea Berthol) was subjected to various concentrations of α-napthalene acetic acid (NAA) to determine growth of stems and manifestations of growth of the roots. It was observed that a negative root formation was evident with fissures on Pink Tecoma (Tabebuia rosea Berthol), also a lapachol substance inhibits root formation which belongs to difficult-to-root species. It was also revealed that untreated stem cuttings produced more shoots per cutting and had increased length of shoots compared to the treated stem cuttings with napthalene acetic acid (NAA). This observation was prevalent on the first three weeks from planting. The untreated stem cuttings, however, exhibited a decline in the cutting’s growth on the proceeding weeks. Basal nodal section developed more shoots than other sections, influenced length of shoot development, and developed more shoots per cutting compared to middle and apical nodal section. This observation was dominant on the first three weeks and declined later because of defoliation.